Study on residue analysis method of imidacloprid in Ephedrae sinica
Chen, M.-y.; Chen, J.; Xue, J.; Yu, J.; Cheng, H.-z.
Zhongguo Zhong Yao Za Zhi 32(8): 675-677
2007
ISSN/ISBN: 1001-5302 PMID: 17608216 Document Number: 605269
To establish residue analysis method of imidacloprid in Ephedra sinica by HPLC. Imidacloprid was extracted with dichloromethane, cleaned up with chromatography column, then separated on Spherisorb C18 column by using Methanol-water (20:80), detected at 270 nm. The limit of detection (LOD) and limit quantification (LOQ) were 0.4 x 10(-9) g and 0.02 mg x kg(-1), mean recovery and related standard deviation (RSD) were 85.37%-90.65% and 2.23%-3.45%. It is concluded that the method could satisfy the pesticide residue analysis demands in sensitivity, accuracy and precision.